CN110703479B

CN110703479B - Display device

Info

Publication number: CN110703479B
Application number: CN201910905055.XA
Authority: CN
Inventors: 王听海; 金慧俊
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2022-03-29
Anticipated expiration: 2039-09-24
Also published as: CN110703479A

Abstract

The invention discloses a display device, which comprises a color film substrate and an array substrate which are oppositely arranged, wherein the array substrate comprises a first substrate; the non-display area of the display device comprises a first frame area, the first frame area comprises a first sub-area and a step area, the first sub-area is located between the display area and the step area in the first direction, and peripheral wiring is arranged in the first sub-area; the display device further comprises at least one alignment mark arranged in the first sub-area, and the alignment mark is used for alignment between the display device and the binding machine when the drive chip and/or the flexible circuit board are bound; the color film substrate comprises a hollowed-out area, the orthographic projection of the alignment mark on the plane of the first substrate is located in the orthographic projection of the hollowed-out area on the plane of the first substrate, and the orthographic projection of the alignment mark on the plane of the first substrate and the orthographic projection of the peripheral wiring on the plane of the first substrate are not overlapped. The invention solves the problems that the alignment mark occupies larger space and the arrangement space of the silver paste point and the test pad in the step area is limited.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

With the development of display technologies, a display device having a display panel requires a narrow bezel to improve the user experience.

The display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a lower frame area, the lower frame area comprises a step area, the step area comprises a silver adhesive point, a test pad and a conductive pad, the conductive pad is used for binding an IC chip or a Flexible Circuit board (FPC for short), when the IC chip or the flexible circuit board is bound, the operation is performed on the binding machine, and at this time, the display panel is aligned with the binding machine, in the prior art, an alignment mark is usually disposed in the step area to align with the binding machine, the alignment mark is usually a cross alignment mark, and the cross alignment mark has a forbidden area, occupies a larger space of the step area, and the position of the conductive pad is fixed, therefore, the arrangement space of the silver adhesive points and the test bonding pads in the step area is limited, and the manufacturing is not facilitated, and the arrangement space of the silver adhesive points and the test bonding pads is not facilitated to the design of narrow frames if the arrangement space of the silver adhesive points and the test bonding pads is increased.

Disclosure of Invention

In view of this, the present invention provides a display device, which is used to solve the problems that the space occupied by the alignment mark aligned with the binding machine is large, and the space for disposing the silver paste dots and the test pads in the step area is limited.

The display device provided by the invention comprises a color film substrate and an array substrate which are oppositely arranged, wherein the array substrate comprises a first substrate;

the display device comprises a display area and a non-display area surrounding the display area, wherein the display area comprises a plurality of signal lines extending along a first direction and arranged along a second direction;

the non-display area comprises a first frame area, the first frame area comprises a first sub-area and a step area, and the first sub-area is located between the display area and the step area in the first direction; the array substrate comprises a first edge area which exceeds one side of the color film substrate, the first edge area is a step area of the display device, and peripheral wiring is arranged in the first sub area;

the display device further comprises a driving chip and/or a flexible circuit board, the step area comprises a binding area, the binding area comprises a plurality of binding pads, and the driving chip and/or the flexible circuit board are bound on the binding pads;

the display device further comprises at least one alignment mark arranged in the first sub-area, and the alignment mark is used for alignment between the display device and a binding machine when the drive chip and/or the flexible circuit board are bound; the color film substrate comprises a hollowed-out area, the orthographic projection of the alignment mark on the plane of the first substrate is located in the orthographic projection of the hollowed-out area on the plane of the first substrate, and the orthographic projection of the alignment mark on the plane of the first substrate is not overlapped with the orthographic projection of the peripheral routing on the plane of the first substrate.

Compared with the prior art, the display device provided by the invention at least realizes the following beneficial effects:

compared with the prior art that the alignment mark is arranged in the step area, the display device solves the problems that the occupied space of the alignment mark is large, and the arrangement space of the silver paste point and the test pad in the step area is limited.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic plan view of a display panel in the prior art;

FIG. 2 is a schematic plan view of a display device according to the present invention;

FIG. 3 is a schematic plane structure diagram of another display device provided by the present invention;

FIG. 4 is a cross-sectional view taken along line A-A' of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B' of FIG. 2;

FIG. 6 is an enlarged view of a portion of region C of FIG. 2;

FIG. 7 is an enlarged view of a portion of the alignment mark of FIG. 6;

FIG. 8 is a cross-sectional view taken along line E-E' of FIG. 7;

FIG. 9 is a further sectional view taken along line E-E' of FIG. 7;

FIG. 10 is a further sectional view taken along line E-E' of FIG. 7;

FIG. 11 is a further enlarged partial view of the alignment marks of FIG. 6;

FIG. 12 is a cross-sectional view taken along line F-F' of FIG. 11;

FIG. 13 is a further enlarged partial view of the alignment marks of FIG. 6;

fig. 14 is a sectional view taken along line G-G' in fig. 13.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In order to solve the above problems, the inventor has conducted the following research on the display panel in the prior art:

referring to fig. 1, fig. 1 is a schematic plan view of a display panel in the prior art. The display panel 00 of fig. 1 includes a display area AA and a non-display area BB surrounding the display area AA, the non-display area BB includes a lower frame area 08, the lower frame area 08 includes a step area 01 and a first sub area 081, the first sub area 081 is located between the step area 01 and the display area AA (as shown in a dashed line frame of fig. 1), a partial length of the peripheral trace 05 is disposed in the first sub area 081, the peripheral trace 05 is electrically connected to the integrated circuit in the left and right frames of the display panel, the step area 01 of fig. 1 includes a silver adhesive point 02, a test pad 03 and a conductive pad 07, the conductive pad 07 is used for binding an IC chip or a flexible circuit board, and is operated on a machine platform when binding the IC chip or the flexible circuit board, and at this time, the display panel is to be aligned with the machine platform, in the prior art, an alignment mark 04 is disposed on the step area 01 to be aligned with the machine platform, this cross counterpoint mark 04 has the forbidden area, has occupied the great space in step area, so the silver point 02 and test pad 04 set up the space and just receive the restriction, are unfavorable for the preparation, are unfavorable for the narrow frame design again if increase silver point 02 and test pad 03 set up the space.

In order to solve the above technical problem, the present invention provides a display device. The following description will be made in detail with respect to embodiments of the display device provided by the present invention.

Referring to fig. 2, 3, 4 and 5, fig. 2 is a schematic plan view illustrating a display device according to the present invention, fig. 3 is a schematic plan view illustrating a further display device according to the present invention, fig. 4 is a cross-sectional view taken along a-a 'in fig. 2, and fig. 5 is a cross-sectional view taken along B-B' in fig. 2.

The display device 100 in fig. 4 includes a color filter substrate 10 and an array substrate 20 that are disposed opposite to each other, where the array substrate 20 includes a first substrate 21; in fig. 2 and 3, it is shown that the display device 100 includes a display area AA including a plurality of signal lines 101 extending in a first direction X and arranged in a second direction Y, and a non-display area BB surrounding the display area AA.

The non-display area BB includes a first frame area 8, the first frame area 8 includes a first sub-area 81 and a step area 1, and the first sub-area 81 is located between the display area AA and the step area 1 in the first direction X; as can be seen from fig. 4, the array substrate 20 includes a first edge region 82 beyond one side of the color filter substrate 10, the first edge region 82 is a step region 1 of the display device 100, and in fig. 2, the peripheral trace 5 is disposed in the first sub-region 81.

The display device 100 further includes a driver chip and/or a flexible printed circuit (not shown), the step region 1 includes a bonding region 15, the bonding region 15 includes a plurality of bonding pads 7, the step region 1 includes a plurality of bonding pads 7, and the driver chip and/or the flexible printed circuit are bonded to the bonding pads 7.

The display device 100 further includes at least one alignment mark 4 disposed in the first sub-region 81, where the alignment mark 4 is used for alignment between the display panel and the binding machine when the driver chip and/or the flexible printed circuit board are bound. It should be noted that the alignment mark 4 in the present invention is not used for alignment when the color film substrate and the array substrate are bonded, but is used for alignment between the display panel and the bonding machine when the driver chip and/or the flexible circuit board are bonded, and the alignment marks used for bonding the driver chip or the flexible circuit board in the prior art are both disposed in the step area.

In fig. 5, the color filter substrate 10 includes a hollow area 11, an orthographic projection of the alignment mark 4 on the plane of the first substrate 21 is located within an orthographic projection of the hollow area 11 on the plane of the first substrate 21, and referring to fig. 2 and 5, an orthographic projection of the alignment mark 4 on the plane of the first substrate 21 and an orthographic projection of the peripheral trace 5 on the plane of the first substrate 21 are not overlapped.

Fig. 2 and 3 only show that two alignment marks 4 are provided, but one or three or more alignment marks may be provided, as long as the alignment marks 4 are located in the first sub-region 81, and the orthographic projection of the alignment marks 4 on the plane of the first substrate 21 and the orthographic projection of the peripheral traces 5 on the plane of the first substrate 21 do not overlap.

In some alternative embodiments, with continued reference to fig. 2 and 3, the step area 1 further includes a fan-out routing area 83, the fan-out routing area 83 is located between the first sub-area 81 and the bonding area 83 along the first direction X, the fan-out routing area 83 includes a plurality of fan-out lines 831, and each fan-out line 831 is electrically connected to each peripheral trace 5.

The bonding area 83 in fig. 2 and 3 comprises the ag paste dots 2 and the at least one test pad 3 arranged in the second direction Y.

In fig. 2 and 3, the non-display area BB further includes a second frame region 84 and a third frame region 85, along the second direction Y, the first frame region 8 is located between the second frame region 84 and the third frame region 85, the second frame region 84 and the third frame region 85 both include the integrated circuit 6 therein, and the integrated circuit 6 is electrically connected to the peripheral trace 5. The integrated circuit 6 is electrically connected with the bonding pad 7 through the peripheral wiring 5, and the bonding pad 7 is electrically connected with the driving chip or the flexible circuit board, so that the driving chip or the flexible circuit board provides an electric signal for the integrated circuit 6.

In addition, fig. 5 only shows a case where the alignment marks 4 are provided on the array substrate 20, and the alignment marks 4 may be provided on the array substrate 20 or the color filter substrate 10, and the positions of the alignment marks 4 are not specifically limited herein.

Fig. 2 shows only the shape in which the center of the alignment mark 4 is cross-shaped and the vacant areas are circular, and fig. 3 shows only the shape in which the center of the alignment mark 4 is cross-shaped and the vacant areas are square, but other shapes are also possible as long as the alignment function can be achieved.

The data line 101 in the display area AA is electrically connected to the driving chip or the flexible circuit board through the bonding pad 7, and receives an electrical signal sent by the driving chip or the flexible circuit board.

Referring to fig. 4, liquid crystal molecules 30 are further interposed between the color filter substrate 10 and the array substrate 20.

According to the invention, the alignment mark 4 is arranged in the first sub-area 81, the first sub-area 81 is positioned between the display area AA and the step area 1, and the orthographic projection of the alignment mark 4 on the plane of the first substrate 21 is not overlapped with the orthographic projection of the peripheral wiring 5 on the plane of the first substrate 21, so that the alignment mark 4 is not arranged in the step area 1, the arrangement space of the silver adhesive dots 2 and the test pads 4 is not limited, the manufacture is facilitated, and the realization of a narrow frame is facilitated.

Compared with the prior art, the display device has the following beneficial effects:

according to the display device 100, the alignment mark 4 aligned with the binding machine is arranged in the first sub-area 81, the first sub-area 81 is located between the display area AA and the step area 1, the first sub-area 81 comprises the peripheral wiring 5, and the orthographic projection of the alignment mark 4 on the plane of the first substrate 21 is not overlapped with the orthographic projection of the peripheral wiring 5 on the plane of the first substrate 21.

Referring to fig. 6, fig. 6 is a partially enlarged view of the region C in fig. 2. As shown in fig. 6, in the first sub-area 81, the color filter substrate 10 includes a first edge 11a and a second edge 11b, the first edge 11a is an edge of the color filter substrate 10 close to the step area 1, the second edge 11b is an edge adjacent to the first edge 11a, in an orthographic projection of a plane where the first substrate is located, a vertical distance between a geometric center of the alignment mark 4 and the first edge 11a and the second edge 11b is less than 1mm, and a distance between an outer edge of the alignment mark 4 and the first edge 11a and the second edge 11b is greater than or equal to 0.

In fig. 6, a perpendicular distance between the geometric center of the alignment mark 4 and the first edge 11a of the color filter substrate 10 is a, and a perpendicular distance between the geometric center of the alignment mark 4 and the second edge 11b of the color filter substrate 10 is b, where a and b are both less than 1mm, and fig. 6 shows that distances between the outer edge of the alignment mark 4 and the first edge 11a and the second edge 11b are both greater than 0, but it is also possible that distances between the outer edge of the alignment mark 4 and the first edge 11a and the second edge 11b are equal to 0, and when the distances are equal to 0, the alignment mark 4 is tangent to the first edge 11a or the second edge 11b of the color filter substrate 10.

In the invention, the alignment mark 4 is arranged at the position where the vertical distance between the geometric center and the first edge 11a and the second edge 11b is less than 1mm, and the distance between the outer edge of the alignment mark 4 and the first edge 11a and the second edge 11b is greater than or equal to 0, at this time, the alignment mark 4 does not affect the wiring of the peripheral wires 5, the area in the first sub-area 81 except the peripheral wires 5 is fully utilized, the alignment can be realized without affecting the peripheral wires 5, and the display device is aligned with the binding machine through the alignment mark 4.

With continued reference to fig. 6, the alignment mark 4 in fig. 6 includes a first portion 41 located at the center and a forbidden area 42 surrounding the first portion 41, an orthographic projection of the first portion 41 on the plane of the first substrate is a cross shape, and an orthographic projection of the forbidden area 42 on the plane of the first substrate is a closed figure.

In fig. 6, the orthographic projection of the outer edge of the forbidden zone 42 on the plane of the first substrate is a circle, but it may be in other shapes as long as the first part 41 located at the center can be identified and aligned during alignment.

The alignment mark 4 is arranged in the first sub-area 81, the orthographic projection of the first part 41 on the plane of the first substrate is in a cross shape, and the orthographic projection of the forbidden area 42 on the plane of the first substrate is a closed graph, so that the identification is convenient, and the alignment is easy to perform when the alignment is performed with a binding machine.

Referring to fig. 7 and 8, fig. 7 is a partially enlarged view of the alignment marks of fig. 6, and fig. 8 is a cross-sectional view taken along line E-E' of fig. 7. In fig. 8, the array substrate 20 includes a first metal layer 22, the first metal layer 22 is located on one side of the first substrate 21 close to the color filter substrate 10, the first metal layer 22 includes a first metal block 221 and a first hollow-out portion 222, the first metal block 221 forms a first portion 41, and the first hollow-out portion 222 forms the forbidden area 42; the color filter substrate 10 includes a second substrate 12 and a black matrix layer BM located on one side of the second substrate 12 close to the array substrate 20, the black matrix layer BM includes a second hollow portion 110, and an orthogonal projection of the second hollow portion 110 on a plane where the first substrate 21 is located is at least partially overlapped with an orthogonal projection of the hollow portion 11 on a plane where the first substrate 21 is located.

The orthographic projection of the first hollow-out portion 222 on the plane of the first substrate 21 is at least partially overlapped with the orthographic projection of the second hollow-out portion 110 on the plane of the first substrate 21.

In this embodiment, the black matrix layer BM and the black matrix of the display area are disposed on the same layer, and the first metal layer 22 may be disposed on the same layer as the metal layer of the display area, and certainly, the first metal layer may be disposed on the same layer as any metal layer of the display area, as long as the first metal block 221 and the first hollow portion 222 in the array substrate 20 are both hollow on the side away from the first substrate 21.

Fig. 8 only shows a case where the orthographic projection of the second hollow portion 110 on the plane of the first substrate 21 and the orthographic projection of the hollow area 11 on the plane of the first substrate 21 completely overlap.

In this embodiment, the alignment mark 4 is disposed on the array substrate 20 and disposed in the first sub-area, and the black matrix layer BM of the color filter substrate 10 has the second hollow portion 110, so that the alignment mark 4 on the array substrate 20 can be observed conveniently, and in addition, since the first portion 41 is formed by the first metal block 221 of the first metal layer 22, and the metal layer has a light-reflecting characteristic, the alignment mark 4 can be observed and identified conveniently from the second hollow portion 110.

Referring to fig. 9 and 10, fig. 9 is a further sectional view taken along line E-E 'in fig. 7, and fig. 10 is a further sectional view taken along line E-E' in fig. 7. The array substrate 20 further includes a first insulating layer 23, the first insulating layer 23 is located on a side of the first metal layer 22 away from the first substrate 21, and the first insulating layer 23 includes a fifth hollow portion 231. In fig. 9, an orthographic projection of the first hollow portion 231 on the plane of the first substrate 21 is located at an orthographic projection of the fifth hollow portion 231 on the plane of the first substrate 21 and overlapped, and in fig. 10, an orthographic projection of the first hollow portion 231 on the plane of the first substrate 21 is located within an orthographic projection of the fifth hollow portion 231 on the plane of the first substrate 21.

In the embodiment, the alignment mark 4 is disposed on the array substrate 20, and the insulation layer of the alignment mark 4 far from the first substrate 21 is made into the fifth hollow 231, which is a hollow, so as to increase the transmittance of light at the alignment mark 4 and facilitate observation of the first portion 41 of the alignment mark 4.

Referring to fig. 11 and 12, fig. 11 is a further enlarged view of a portion of the alignment mark of fig. 6, and fig. 12 is a sectional view taken along direction F-F' of fig. 11. In fig. 12, the array substrate 20 includes a first metal layer 22, the first metal layer 22 includes a second metal block 223 and a third hollow-out portion 224, the third hollow-out portion 224 forms the first portion 41, and the second metal block 223 forms the forbidden area 223; the color film substrate 10 comprises a second substrate 12 and a black matrix layer BM located on one side of the second substrate 12 close to the array substrate 20, the black matrix layer BM comprises a fourth hollow portion 111, and an orthographic projection of the second metal block 223 on the plane of the first substrate 21 is at least partially overlapped with an orthographic projection of the hollow portion 11 on the plane of the first substrate 21; the orthographic projection of the second metal block 223 on the plane of the first substrate 21 is at least partially overlapped with the orthographic projection of the fourth hollow-out part 111 on the plane of the first substrate 21.

In this embodiment, the black matrix layer BM and the black matrix of the display area are disposed on the same layer, and the first metal layer 22 may be disposed on the same layer as the metal layer of the display area, and certainly, the first metal layer may be disposed on the same layer as any metal layer of the display area as long as the sides of the array substrate 20, the second metal block 223 and the third hollow portion 224, which are far away from the first substrate 21, are hollow.

In this embodiment, the alignment mark 4 is disposed on the array substrate 20 and disposed in the first sub-area, and the black matrix layer BM of the color filter substrate 10 is disposed with the fourth hollow portion 111, so that the alignment mark 4 on the array substrate 20 can be conveniently seen, and in addition, since the forbidden area 42 is formed by the second metal block 223 of the first metal layer 22, the first portion 41 is formed by the third hollow portion 224, and the metal layer of the forbidden area 223 has a light-reflecting property, so that the first portion 41 identifying the alignment mark 4 can be conveniently observed from the fourth hollow portion 111 for alignment.

Referring to fig. 13, fig. 13 is a further enlarged view of a portion of the alignment mark of fig. 6, and fig. 14 is a sectional view taken along line G-G' of fig. 13. In fig. 14, the array substrate 20 includes a sixth hollow portion 224 to form the blank area 42, the color filter substrate 10 further includes a color resist layer 13, the color resist layer 13 is located on one side of the second substrate 12 close to the array substrate 20, the color resist layer 13 includes a first color resist block 131, and the first color resist block 131 forms the first portion 41.

The color-resisting layer 13 in this embodiment is optionally disposed on the same color-resisting layer in the display area. With continued reference to fig. 13 and 14, in some alternative embodiments, the first color block 131 is at least one of red, green, or blue in color. Fig. 13 and 14 only show that the first color block 131 is one color, but it is needless to say that the first color block may be a color block of two colors or a color block of three colors stacked, and the alignment mark may be conveniently observed and aligned by only the first portion 41 made of the color block having the color.

In this embodiment, the blank area 42 is formed at a position of the array substrate 20 corresponding to the alignment mark, and then the first color resist block 131 is disposed on the color filter substrate 10 to form the first portion 41, so that when light emitted from the backlight module or ambient light passes through the alignment mark 4, the colored first portion 41 can be identified, the alignment mark 4 can be easily observed, and the application is wider.

With continued reference to fig. 6, 11 and 13, the forbidden area 42 has a circular shape in the orthographic projection of the plane of the first substrate 21.

The arrangement of the alignment mark 4 in a circular shape can enable distances between the geometric center of the alignment mark 4 and each point on the outer edge of the forbidden area 42 to be equal, when the alignment mark 4 is arranged in the first subregion, the distances between the outer edge of the forbidden area 42 and the first edge and the second edge of the color film substrate can be controlled more easily, and when the forbidden area 42 is in a circular shape, the occupied area is the smallest, so that the alignment mark can be arranged in the first subregion conveniently, and the arrangement of peripheral routing is not affected.

With continued reference to fig. 13, the shortest distance of the outer edge of the first portion 41 from the outer edge of the gob 42 is r, where r is greater than 0 and no greater than 0.5 mm.

r is greater than 0, that is to say, the orthographic projection of the first portion 41 on the plane of the first substrate is to be located in the orthographic projection of the forbidden zone 42 on the plane of the first substrate, and is not greater than 0.5mm, the first portion 41 can be easily observed, and the arrangement of peripheral wiring cannot be influenced due to the overlarge occupied area.

As can be seen from the above embodiments, the display device provided by the present invention at least achieves the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The display device is characterized by comprising a color film substrate and an array substrate which are arranged oppositely, wherein the array substrate comprises a first substrate;

2. The display device according to claim 1, wherein in the first sub-area, the color filter substrate includes a first edge and a second edge, the first edge is an edge of the color filter substrate close to the step area, the second edge is an edge adjacent to the first edge, in an orthographic projection of a plane where the first substrate is located, a vertical distance between a geometric center of the alignment mark and the first edge and a vertical distance between the geometric center of the alignment mark and the second edge are less than 1mm, and a distance between an outer edge of the alignment mark and the first edge and the second edge is greater than or equal to 0.

3. The display device according to claim 1, wherein the alignment mark includes a first portion located at the center and a forbidden area surrounding the first portion, an orthographic projection of the first portion on a plane of the first substrate is cross-shaped, and an orthographic projection of the forbidden area on the plane of the first substrate is a closed figure.

4. The display device according to claim 3, wherein the array substrate comprises a first metal layer, the first metal layer comprises a first metal block and a first hollow portion, the first metal block forms the first portion, and the first hollow portion forms the forbidden area;

the color film substrate comprises a second substrate and a black matrix layer positioned on one side of the second substrate close to the array substrate, the black matrix layer comprises a second hollow part, and the orthographic projection of the second hollow part on the plane of the first substrate is at least partially overlapped with the orthographic projection of the hollow part on the plane of the first substrate;

the orthographic projection of the first hollow part on the plane where the first substrate is located is at least partially overlapped with the orthographic projection of the second hollow part on the plane where the first substrate is located.

5. The display device according to claim 3, wherein the array substrate comprises a first metal layer, the first metal layer comprises a second metal block and a third hollow portion, the third hollow portion forms the first portion, and the second metal block forms the forbidden area;

the color film substrate comprises a second substrate and a black matrix layer positioned on one side of the second substrate close to the array substrate, the black matrix layer comprises a fourth hollow part, and the orthographic projection of the second metal block on the plane of the first substrate is at least partially overlapped with the orthographic projection of the hollow part on the plane of the first substrate;

and the orthographic projection of the second metal block on the plane of the first substrate is at least partially overlapped with the orthographic projection of the fourth hollow part on the plane of the first substrate.

6. The display device according to claim 4, wherein the array substrate further comprises a first insulating layer, the first insulating layer is located on a side of the first metal layer away from the first substrate, the first insulating layer comprises a fifth hollow portion, an orthographic projection of the first hollow portion on a plane where the first substrate is located is overlapped with an orthographic projection of the fifth hollow portion on the plane where the first substrate is located, or the orthographic projection of the first hollow portion on the plane where the first substrate is located within an orthographic projection of the fifth hollow portion on the plane where the first substrate is located.

7. The display device according to claim 3, wherein the array substrate includes a sixth hollow portion to form the forbidden area, the color filter substrate includes a second substrate and a color resist layer, the color resist layer is located on one side of the second substrate close to the array substrate, the color resist layer includes a first color resist block, and the first color resist block forms the first portion.

8. The display device according to claim 7, wherein the color of the first color block is at least one of red, green or blue.

9. The display device according to claim 3, wherein an orthographic projection of the forbidden zone on a plane of the first substrate is a circle.

10. The display device according to claim 9, wherein a shortest distance of an outer edge of the first portion from an outer edge of the forbidden area is r, wherein r is greater than 0 and not greater than 0.5 mm.

11. The display device according to claim 1, wherein the step area further comprises a fan-out routing area, the fan-out routing area is located between the first sub-area and the bonding area along the first direction, the fan-out routing area comprises a plurality of fan-out lines, and each fan-out line is electrically connected to each peripheral line.

12. The display device of claim 11, wherein the bonding area comprises silver paste dots and at least one test pad arranged along the second direction.

13. The display device according to claim 1, wherein the non-display area further comprises a second bezel area and a third bezel area, the first bezel area is located between the second bezel area and the third bezel area along the second direction, and the second bezel area and the third bezel area each include an integrated circuit therein, and the integrated circuit is electrically connected to the peripheral trace.